445473121 has 2 divisors, whose sum is σ = 445473122. Its totient is φ = 445473120.

The previous prime is 445473071. The next prime is 445473157. The reversal of 445473121 is 121374544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380445025 + 65028096 = 19505^2 + 8064^2 .

It is a cyclic number.

It is not a de Polignac number, because 445473121 - 2¹¹ = 445471073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (445413121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222736560 + 222736561.

It is an arithmetic number, because the mean of its divisors is an integer number (222736561).

Almost surely, 2^445473121 is an apocalyptic number.

It is an amenable number.

445473121 is a deficient number, since it is larger than the sum of its proper divisors (1).

445473121 is an equidigital number, since it uses as much as digits as its factorization.

445473121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

The square root of 445473121 is about 21106.2341738170. The cubic root of 445473121 is about 763.7311450634.

The spelling of 445473121 in words is "four hundred forty-five million, four hundred seventy-three thousand, one hundred twenty-one".